A Green Starting Material for Electrophilic Aromatic Substitution for the Undergraduate Organic Laboratory

摘要

Green chemistry is a form of pollution prevention.It is most simply defined as "the use of chemistry techniques and methodologies that reduce or eliminate the use or generation of feedstocks,products,byproducts,solvents,reagents,and so forth that are hazardous to human health or the environment".Green chemistry seeks to solve the problem of pollution by attacking the relevant molecular science at the onset rather than attempting to find solutions after the fact.In the past,environmental initiatives have been aimed at reducing risk via decreasing exposure.The hazard factor,however,has been held relatively constant.Green chemistry involves an alternative approach.If fundamental changes can be made to a hazardous chemical process that succeed in transforming it into one that is environmentally benign,the hazard factor goes to zero and the risk is therefore eliminated.Green chemistry is based on this premise.